Question

You use 4 boxes of rice to serve 13 people. If you want to serve 39 people, what should you do?

Answer 1

YOU SHOULD MAKE MORE RICE
3x's more rice!

Answer 2

Answer:

Use $3$ times as many boxes of rice

Step-by-step explanation:

we know that

Using proportion

$\frac{4}{13}\frac{boxes}{people}=\frac{x}{39}\frac{boxes}{people} \\ \\x=39*4/13\\ \\x=12\ boxes$

original quantity of boxes ----->  $4$

boxes needed ----->  $12$

$12=3*(4)$

therefore

Use $3$ times as many boxes of rice